Only one person spoke in opposition to the resolution, which would not be legally binding.

The lack of opposition came as kind of a surprise to the Commission on the Environment, said spokesman Mark Westlund. But with many city agency budgets, such as San Francisco General Hospital's $1.8 million annually for food and related supplies, Westlund doesn't expect commercial industries dealing with genetically engineered food to lie down.

"We expect that (the opponents of the resolution) will be there when it goes before the Board of Supervisors," he said.

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Besides giving preference to organic caters, the resolution urges the San Francisco Unified School District to serve organic lunches and encourages the Department of Consumer Assurance to provide educational materials about genetically engineered foods to city grocers.